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Catastrophic disruption by hypervelocity impact of multi-layered spherical ice targets.

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Title: Catastrophic disruption by hypervelocity impact of multi-layered spherical ice targets.
Authors: Burchell, M.J.1 (AUTHOR) m.j.burchell@kent.ac.uk, Harriss, K.H.1 (AUTHOR)
Source: International Journal of Impact Engineering. Oct2022, Vol. 168, pN.PAG-N.PAG. 1p.
Subjects: Hypervelocity, Ice, Energy density, Spheres
Abstract: • Tri-layered targets (solid core-water layer-icy surface) were made and impacted • The targets were tested for catastrophic disruption at speeds in excess of 1 km s−1 • A solid core beneath a liquid intermediate layer lowers the resistance to disruption The catastrophic disruption of tri-layered spherical icy bodies is reported. The bodies are 19 cm in total diameter, with a central core, an intermediate water layer and an icy surface (each layer respectively approximately 25, 55 and 20% of the total radius). Their response to high-speed impact is investigated at laboratory scales by firing 1.5 mm diameter glass spheres at the targets at speeds in the range 0.9 – 3.2 km s−1 and an ice layer thickness normalised to projectile diameter of typically 20 – 30. The energy density to just break apart such a body (defined as an event where the mass of the largest fragment post-impact is ½ the original target mass) is (3.1±0.1) J kg−1. This is significantly less than that found for similar sized solid ice spheres (18 ± 0.7) J kg−1, water filled ice spheres (16.25 ± 1.35) J kg−1 or hollow ice spheres (25.5 ± 0.5) J kg−1 indicating that the presence of a solid layer beneath an internal ocean, can influence disruption, effectively weakening the body. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 157927502
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PubTypeId: academicJournal
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  Data: Catastrophic disruption by hypervelocity impact of multi-layered spherical ice targets.
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  Data: <searchLink fieldCode="DE" term="%22Hypervelocity%22">Hypervelocity</searchLink><br /><searchLink fieldCode="DE" term="%22Ice%22">Ice</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+density%22">Energy density</searchLink><br /><searchLink fieldCode="DE" term="%22Spheres%22">Spheres</searchLink>
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  Label: Abstract
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  Data: • Tri-layered targets (solid core-water layer-icy surface) were made and impacted • The targets were tested for catastrophic disruption at speeds in excess of 1 km s−1 • A solid core beneath a liquid intermediate layer lowers the resistance to disruption The catastrophic disruption of tri-layered spherical icy bodies is reported. The bodies are 19 cm in total diameter, with a central core, an intermediate water layer and an icy surface (each layer respectively approximately 25, 55 and 20% of the total radius). Their response to high-speed impact is investigated at laboratory scales by firing 1.5 mm diameter glass spheres at the targets at speeds in the range 0.9 – 3.2 km s−1 and an ice layer thickness normalised to projectile diameter of typically 20 – 30. The energy density to just break apart such a body (defined as an event where the mass of the largest fragment post-impact is ½ the original target mass) is (3.1±0.1) J kg−1. This is significantly less than that found for similar sized solid ice spheres (18 ± 0.7) J kg−1, water filled ice spheres (16.25 ± 1.35) J kg−1 or hollow ice spheres (25.5 ± 0.5) J kg−1 indicating that the presence of a solid layer beneath an internal ocean, can influence disruption, effectively weakening the body. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Impact Engineering is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.ijimpeng.2022.104294
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Hypervelocity
        Type: general
      – SubjectFull: Ice
        Type: general
      – SubjectFull: Energy density
        Type: general
      – SubjectFull: Spheres
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              Text: Oct2022
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              Y: 2022
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              Value: 168
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